Bobbin.



No. 773,185. PATENTED QCT. 25, 1904. J. G. 'BIERIUH.

BOBBIN.

APPLIOATION FILED JAN. 7, 1904.

no MODEL.

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UNITED STATES Patented October 25, 1904.

PATENT OFFICE.

BOBBIN.

SPECIFICATION forming part of Letters Patent No. 773,185, dated October 25, 1 904. Application filed January 7, 1904. SerialNo. 188,134. (No model.)

To It whomit may concern:

Be it known that I, J OHANN GUSTAV BIE- RICH, manufacturer, a subject of the Emperor of Russia, and a resident of Menkenhof, near Lievenhof, Russia, have invented a certain and to letters of reference marked thereon,

which form a part of this specification. V

This invention relates to spools, bobbins, and like hollow articles made of composite wood and paper material.

The object of the invention is to provide a spool, bobbin, or the like of simple, strong, durable, light, and inexpensive construction.

In the accompanying drawings, Figure 1 is a view, partly in elevation and partly in section, of a spool or bobbin embodying the in vention. Fig. 2 is a transverse section thereof through the body inline A A, Fig. 1. Fig. 3 is a transverse section of one of the spool-heads in line B B, Fig. 1.

Like letters of reference refer to like parts in the several figures.

The spool or bobbin consists of atubular or V hollow cylindrical body a and end disks or heads 5, which are secured to the opposite ends of the tubular body. The latter is made of composite material consisting of alternate layers or thicknesses of thin pasteboard or paper 0 and wood-veneer (Z, which are superposed and cemented together and rolled or bent and secured in tubular form. This composite material of the body is pliable and tough and not liable to break, thus enabling the manufacture of tubes or hollow cylinders of relatively small diameter, while the resulting tube or hollow cylinder is very strong and durable and a poor conductor of heat.

The end disks 01' heads b of the spool or bobbin consist of blocks composed exclusively of thin layers or sheets of wood veneer superposed with their fibers crossing each other and cemented together. The composite material for both the tubular body and heads is subjected to pressure, then dried, and thereafter the parts are fashioned to the proper shape and cemented together, then turned to the desired final form and varnished or otherwise finished. The heads are preferably connected cheaper to manufacture. The composite tubular body of pasteboard and wood veneer re- ,quires very little thickness and correspondinglylittle weightto give it the great rigidity and durability necessary to enable it to withstand the heavy strains and pressure in all directions to which it is subjected in winding thread or wire thereon.

I claim as my invention 1. A spool or bobbin having atubular body consisting of alternate united layers of pasteboard and wood veneer, substantially as set forth.

2. A spool or bobbin comprising a tubular body. consisting of alternate united layers of pasteboard and wood veneer, and heads secured to the opposite ends of said body and consisting of united wood veneers, substantially as set forth. I

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses.

JOHANN GUSTAV BIERICH. 

